Gyrocopters have a Unit Strength of 3. They are considered to be war machines only insofar that they are affected by spells or magical effects that specifically affect war machines. Each Gyrocopter deploys as a separate unit and does not have to be deployed with other war machines. In all other respects it is treated as a Flying monster.
If the Gyrocopter can't fly for any reason, it can't move.
A Gyrocopter that chooses to flee as a charge reaction and subsequently rallies at the beginning of its next turn may reform facing in any direction and is free to move during the Movement phase, but may not shoot or charge.
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